Vocalizer Automotive 5.5 Driver

This add-on adapts the legacy 32-bit Nuance Vocalizer Automotive 5.5 driver for both 32-bit and 64-bit NVDA.

On 32-bit NVDA, the original Automotive driver is loaded directly. On 64-bit NVDA, the bridge runs it in NVDA's dedicated 32-bit synthesizer host.

The original Vocalizer Automotive 5.5 project is abandonware. The original add-on author is not responsible for this fork, its modifications or its support.

Installation

  1. Install the add-on.
  2. The add-on already contains the required Automotive runtime components.
  3. Install your voice add-ons separately.
  4. Use NVDA menu > Vocalizer Automotive to enter the license and configure automatic language switching.
  5. Restart NVDA and select vocalizerAutomotive on 32-bit NVDA, or vocalizerAutomotive32 on 64-bit NVDA.

The license file is not included in the package and must be imported from your own licensed copy.

Audio processing

This release uses the classic NVDA compatibility bridge on 64-bit NVDA. On 32-bit NVDA, Automotive uses its native direct path. Sonic Pitch remains independent and uses its own WavePlayer hook.

This release does not use NVDA's brokered-audio path. Use v2.2.0 on 64-bit NVDA 2026.2 or newer for brokered audio and native audio ducking.

Release variants

Install only one variant at a time.

Automatic language switching

The settings dialog detects installed voices from their .hdr metadata and stores the selected mapping in %APPDATA%\nvda\vocalizer.ini.

Translations

The add-on interface includes the original translations for locales an, ar, da, de, el, es, fi, fr, gl, hr, hu, it, ja, ko, nb_NO, ne, nl, pl, pt_BR, pt_PT, ru, sk, sl, tr and zh_CN. HTML documentation is available in English, Polish and Slovak.